reorder config.mk variables

By placing the default WLR_INCS and WLR_LIBS before the ones for an
alternative wlroots, they don't need to be commented to enable the
alternative ones.

allow the use of non-system wlroots library

References: https://codeberg.org/dwl/dwl/issues/646#issuecomment-2032644

`-pedantic` -> `-Wpedantic`

Bug: https://codeberg.org/dwl/dwl/issues/584

bump version to 0.8-dev

bump version to 0.7-rc1

bump version to 0.6

Merge remote-tracking branch 'upstream/main' into wlroots-next

default CC to gcc

posix c99 does not accept `-pedantic`

Fixes: https://codeberg.org/dwl/dwl/issues/584

bump version to 0.5

Merge remote-tracking branch 'upstream/main' into wlroots-next

allow specify DATADIR (to install desktop file)

Merge remote-tracking branch 'upstream/main' into wlroots-next

bump version to 0.4

remove `--long` from git-describe command

Merge branch 'main' into wlroots-next

bump version to 0.4-rc3

Merge remote-tracking branch 'upstream/main' into wlroots-next

bump version to 0.4-rc2

Merge remote-tracking branch 'upstream/main' into wlroots-next

bump version to 0.4-rc1